Tone wheel



FIG. 1 is a front perspective view of my new invention;

FIG. 2 is rear perspective view of my new invention

FIG. 3 is a front view thereof;

FIG. 4 is a side view thereof, with the illustrated portion of the tone wheel being symmetrical about a central axis; and

FIG. 5 is a rear view thereof; and,

FIG. 6 side sectional view taken along line 6-6 of FIG. 3. 

CLAIM The ornamental design for a tone wheel, as shown and described. 